random: entropy tweaks are all the rage nowadays

use nonblocking for all.  Read this web page:
http://lwn.net/Articles/489734/
random: prevent add_input from doing anything
Revert "random: prevent add_input from doing anything"

This reverts commit 3919701c3f8ae233f50ed26e677e3cb1c43b931c.
Revert "random: entropy tweaks are all the rage nowadays"

This reverts commit af62aab6631b0ff55a4722b6ddad6c81fc11f123.
Add ROW I/O Scheduler by Qualcomm.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
block: row: fix compatibility with 3.0 Kernel code.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Enable ROW I/O Scheduler